plunge-v; 4 Senses

Sense Number 1: cause to be immersed in

Commentary: Syntax Is: NP1 PLUNGE[causative] NP2
NOTE: compare "icy water" examples in groups 1 and 2
NOTE: May be reflexive

The professor plunged his students into the study of the Italian text.
She plunged into the dating scene.
New Orleans was plunged into a nightmare by Hurricane Katrina.
We plunged into the icy water. (if the subject did so willingly, as in jumping off a pier)
Most of the building was plunged into darkness during the thunderstorm.
London Underground was plunged into chaos by the severe weather today.

VerbNet: escape-51.1
FrameNet: Placing
PropBank: plunge.02
WordNet 3.0 Sense Numbers: 1, 3, 5, 7, 8

Sense Number 2: fall or drop steeply

Commentary: Syntax Is: NP1 PLUNGE[inchoative]

The Prime Minister's personal approval rating has plunged to an all-time low of 36 percent.
Google Shares plunged erratically in volatile trading after the market closed in New York last night.
A packed passenger train derailed Monday and plunged into a steep river canyon outside the Montenegrin capital.
We plunged into the icy water. (if the subject was in a derailed train)
The sample was plunged into liquid nitrogen.

VerbNet: calibratable_cos-45.6-1,escape-51.1,meander-47.7
FrameNet: Motion_directional
PropBank: plunge.01
WordNet 3.0 Sense Numbers: 2, 6

Sense Number 3: begin/start out with vigor

Commentary: Syntax Is: NP1[agent] PLUNGE PP{into NP}
NOTE: implies a starting point of NP2

I plunged into the job of creating something from nothing.
She plunged into a new adventure.
Every time I plunge into the magazine's crackling pages at my dentist's I get excited.

VerbNet: NM
FrameNet: NM
PropBank: NM
WordNet 3.0 Sense Numbers: 4

Sense Number 4: unclog a toilet

Then pour in a pail of water and plunge one more time before flushing the toilet to refill the bowl.

VerbNet: NM
FrameNet: NM
PropBank: NM